Molecular translational diffusion in solution under radiation pressure of near infrared laser light

Syoji Ito; Takashi Sugiyama; Naoki Toitani; Genki Katayama; Lingyun Pan; Naoto Tamai; Hiroshi Miyasaka

doi:10.1117/12.680373

30 August 2006 Molecular translational diffusion in solution under radiation pressure of near infrared laser light

Syoji Ito, Takashi Sugiyama, Naoki Toitani, Genki Katayama, Lingyun Pan, Naoto Tamai, Hiroshi Miyasaka

Proceedings Volume 6326, Optical Trapping and Optical Micromanipulation III; 632605 (2006) https://doi.org/10.1117/12.680373
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Fluorescence correlation spectroscopy (FCS) was applied to investigate molecular translational diffusion in the solution of water, ethylene glycol, and heavy water under gradient light field of a near infrared (NIR) laser beam. The diffusion times of Rhodamine-6G in ethylene glycol and Rhodamine-123 in water became faster with an increase in the NIR laser power owing to absorption of the NIR light by the solvents. We also applied the radiation pressure of the NIR laser light to cadmium telluride (CdTe) nanoparticles dispersed in heavy water, resulting in increase in the average number of the CdTe particles in the confocal volume with increasing the NIR laser power.

Citation Download Citation

Syoji Ito, Takashi Sugiyama, Naoki Toitani, Genki Katayama, Lingyun Pan, Naoto Tamai, and Hiroshi Miyasaka "Molecular translational diffusion in solution under radiation pressure of near infrared laser light", Proc. SPIE 6326, Optical Trapping and Optical Micromanipulation III, 632605 (30 August 2006); https://doi.org/10.1117/12.680373

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